Yosuke Watanuki defeated Yusuke Takahashi 0-6 6-3 6-1 in the Japan F5 qualifying round on hard. The result followed the form book — Yosuke Watanuki came in leading the head-to-head 2–0. Yosuke Watanuki extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-19 | Chinese Taipei F2 | F | hard | Yosuke Watanuki | 6-2 6-3 |
| 2017-06-05 | Japan F7 | SF | hard | Yosuke Watanuki | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.